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The Milky Way is approximately 890 billion to 1.54 trillion times the mass of the Sun in total (8.9 × 10 11 to 1.54 × 10 12 solar masses), [7][8][9] although stars and planets make up only a small part of this. Estimates of the mass of the Milky Way vary, depending upon the method and data used.
Planet Nine is a hypothetical ninth planet in the outer region of the Solar System. [2] [4] Its gravitational effects could explain the peculiar clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun at distances averaging more than 250 times that of the Earth i.e. over 250 astronomical units (AU).
Lists of astronomical objects. Selection of astronomical bodies and objects: Moon Mimas and Ida, an asteroid with its own moon, Dactyl. Comet Lovejoy and Jupiter, a giant gas planet. The Sun; Sirius A with Sirius B, a white dwarf; the Crab Nebula, a remnant supernova. A black hole (artist concept); Vela Pulsar, a rotating neutron star.
Size (left) and distance (right) of a few well-known galaxies put to scale. The following is a list of notable galaxies.. There are about 51 galaxies in the Local Group (see list of nearest galaxies for a complete list), on the order of 100,000 in the Local Supercluster, and an estimated 100 billion in all of the observable universe.
Nemesis – Hypothetical star orbiting the Sun, supposedly responsible for extinction events. Planet Nine – Hypothetical Solar System planet. Theia – Planet hypothesized to have impacted Earth and created the Moon. Tyche – Hypothetical gas giant in the Oort cloud. Planetary objects proposed in religion, astrology, ufology and pseudoscience.
The place where the ruins of the Sanctuary of Persephone were brought to light is located at the foot of the Mannella hill, near the walls (upstream side) of the polis of Epizephyrian Locri. Thanks to the finds that have been retrieved and to the studies carried on, it has been possible to date its use to a period between the 7th century BC and ...
Persephone is the most uninhibited character in “Hadestown.” When they had the announcement for your casting, you said something about how, as a sober person, you appreciated the chance to ...
List of nearest galaxies. This is a list of known galaxies within 3.8 megaparsecs (12.4 million light-years) of the Solar System, in ascending order of heliocentric distance, or the distance to the Sun. This encompasses about 50 major Local Group galaxies, and some that are members of neighboring galaxy groups, the M81 Group and the Centaurus A ...